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MakcuM [25]
3 years ago
6

21) -5z – 4 + 8 - x; use x = 7, and z = 2

Mathematics
1 answer:
Ivanshal [37]3 years ago
8 0

Answer:

-13

Step-by-step explanation:

-5z-4+8-x

-5(2)-4+8-7

-10-4+8-7

-14+8-7

-21+8

-13

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Find the discriminant for each quadratic function below. Then list the number of zeros/solutions for each quadratic function.
Hunter-Best [27]

Answer:

Step-by-step explanation:

The discriminant is found in

b^2-4ac which is part of the quadratic formula. In

4x^2+10x-16=0, a = 4, b = 10, c = -16. Filling in for the discriminant:

10^2-4(4)(-16)=100+256=356

It's positive so we know we have real roots; it's not a perfect square, so our solutions are 2 complex rational.

In -16x^2-7x+3=0, a = -16, b = -7, c = 3. Filling in for the discriminant:

(-7)^2-4(-16)(3)=49+192=241

It's positive and not a perfect square so the 2 solutions are complex rational

5 0
3 years ago
What is 6(5-8v)+12=-54
stira [4]
V=2 bc when u distribute the 6 to the numbers in the parenthesis u get 30-48v+12=54 then u subract 12 on both sides getting 30-48v=-66 then u subtract 30 on both sides making it -48v=-96 and mental math leads to -48•2=-96
4 0
3 years ago
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The length of a rectangle is 1 less than twice the width. The area of the rectangle is 28 square feet. The equation 2w²-w-28 , w
dybincka [34]
The answer should be B
4 0
3 years ago
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A baker decorates 42 cupcakes in 30 minutes. She decorates cupcakes at a constant rate. How many cupcakes can the baker decorate
jolli1 [7]
Divide 42 by 30 and that should be your correct answer. 

hope this helps.
8 0
3 years ago
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I have been stuck on this all day, please explain how to do this
german

Answer:$3,700

Step-by-step explanation:

Gross sales are the total amount of sales a company earned throughout a specific period of time, without taking into consideration any costs involved with running a business. Gross sales do not factor in expenses related to running a business, also known as cost of goods sold (COGS), which get deducted when calculating net sales. For example, they do not account for costs associated with item production, employee wages, building rent, returns, theft or sales tax.

Gross Sales = $3,700

8 0
2 years ago
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